Video: UK's Kate Gives Birth to Royal Heir

Prince William's wife, Kate, has given birth to a prince who is now third in line to the British throne. The child was born Monday, after many Britons woke up to the news that Kate, also known as the Duchess of Cambridge, had gone into labor. (July 22)

In this file picture taken September 13, 2012 Catherine, the Duchess of Cambridge, visits the Kranji War Memorial with her husband, Britain's Prince William (not pictured), to pay their respects to those lost during WWII in Singapore. Kate Middleton was the middle-class girl who made becoming a princess look easy -- but bringing up a royal baby will bring fresh challenges for Britain's glamorous future queen. Since her fairytale marriage to Prince William in 2011, 31-year-old Catherine, Duchess of Cambridge, as she is now formally known, has hardly put a foot wrong.

Prince William's wife, Kate, has given birth to a prince who is now third in line to the British throne. The child was born Monday, after many Britons woke up to the news that Kate, also known as the Duchess of Cambridge, had gone into labor. (July 22)